[PATCH V4 1/2] dt-bindings: riscv: add MMU Standard Extensions support for Svpbmt

[wefu@redhat.com]

From: Wei Fu <wefu@redhat.com> 

Previous patch has added svpbmt in arch/riscv and add "riscv,svpmbt"
in the DT mmu node. Update dt-bindings related property here.

Signed-off-by: Wei Fu <wefu@redhat.com>
Co-developed-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Guo Ren <guoren@kernel.org>
Cc: Anup Patel <anup@brainfault.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Rob Herring <robh+dt@kernel.org>
---
 Documentation/devicetree/bindings/riscv/cpus.yaml | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index aa5fb64d57eb..9ff9cbdd8a85 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -63,6 +63,16 @@ properties:
       - riscv,sv48
       - riscv,none
 
+  mmu:
+    description:
+      Describes the CPU's MMU Standard Extensions support.
+      These values originate from the RISC-V Privileged
+      Specification document, available from
+      https://riscv.org/specifications/
+    $ref: '/schemas/types.yaml#/definitions/string'
+    enum:
+      - riscv,svpmbt
+
   riscv,isa:
     description:
       Identifies the specific RISC-V instruction set architecture
-- 
2.25.4